Yes, when Pope Gregory XIII "fixed" the Julian calendar in 1582, he also introduced new tables for determining the dates of Resurrection Sunday through at least the year 4099.
No, Holy Week and Easter are very busy times for the Pope in the Vatican. He does not travel during those times.
The Julian Calendar made the year too long and everything had gotten out of sync especially the dates of important feasts such as Easter. Pope Gregory proposed and inacted a new calendar that was closer to the actual length of a year.
No, Pope Gregory the Great .was also known as Pope Gregory I.
That would be Pope Saint Gregory I.
Pope St. Gregory VII was pope in 1075.Pope St. Gregory VII was pope in 1075.
Yes, Pope Gregory I was the 64th pope.
Pope Gregory I
Yes, he was also known as Pope Gregory the Great.
Pope Gregory VII was a Catholic pope. Of course he was a Christian.
Pope Gregory VII was elected pope on April 23, 1073.
Pope Gregory III was born in 690.
Pope Gregory XII was born in 1326.